pv/mainwindow.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifdef ENABLE_DECODE
  21 #include <libsigrokdecode/libsigrokdecode.h>
  22 #endif
  23
  24 #include <algorithm>
  25 #include <cassert>
  26 #include <cstdarg>
  27 #include <cstdint>
  28 #include <iterator>
  29
  30 #include <QAction>
  31 #include <QApplication>
  32 #include <QCloseEvent>
  33 #include <QDebug>
  34 #include <QDockWidget>
  35 #include <QHBoxLayout>
  36 #include <QMessageBox>
  37 #include <QSettings>
  38 #include <QShortcut>
  39 #include <QWidget>
  40
  41 #include "mainwindow.hpp"
  42
  43 #include "application.hpp"
  44 #include "devicemanager.hpp"
  45 #include "devices/hardwaredevice.hpp"
  46 #include "dialogs/settings.hpp"
  47 #include "globalsettings.hpp"
  48 #include "toolbars/mainbar.hpp"
  49 #include "util.hpp"
  50 #include "views/trace/view.hpp"
  51 #include "views/trace/standardbar.hpp"
  52
  53 #ifdef ENABLE_DECODE
  54 #include "subwindows/decoder_selector/subwindow.hpp"
  55 #include "views/decoder_output/view.hpp"
  56 #endif
  57
  58 #include <libsigrokcxx/libsigrokcxx.hpp>
  59
  60 using std::dynamic_pointer_cast;
  61 using std::make_shared;
  62 using std::shared_ptr;
  63 using std::string;
  64
  65 namespace pv {
  66
  67 using toolbars::MainBar;
  68
  69 const QString MainWindow::WindowTitle = tr("PulseView");
  70
  71 MainWindow::MainWindow(DeviceManager &device_manager, QWidget *parent) :
  72         QMainWindow(parent),
  73         device_manager_(device_manager),
  74         session_selector_(this),
  75         icon_red_(":/icons/status-red.svg"),
  76         icon_green_(":/icons/status-green.svg"),
  77         icon_grey_(":/icons/status-grey.svg")
  78 {
  79         setup_ui();
  80         restore_ui_settings();
  81 }
  82
  83 MainWindow::~MainWindow()
  84 {
  85         // Make sure we no longer hold any shared pointers to widgets after the
  86         // destructor finishes (goes for sessions and sub windows alike)
  87
  88         while (!sessions_.empty())
  89                 remove_session(sessions_.front());
  90
  91         sub_windows_.clear();
  92 }
  93
  94 void MainWindow::show_session_error(const QString text, const QString info_text)
  95 {
  96         // TODO Emulate noquote()
  97         qDebug() << "Notifying user of session error:" << info_text;
  98
  99         QMessageBox msg;
 100         msg.setText(text + "\n\n" + info_text);
 101         msg.setStandardButtons(QMessageBox::Ok);
 102         msg.setIcon(QMessageBox::Warning);
 103         msg.exec();
 104 }
 105
 106 shared_ptr<views::ViewBase> MainWindow::get_active_view() const
 107 {
 108         // If there's only one view, use it...
 109         if (view_docks_.size() == 1)
 110                 return view_docks_.begin()->second;
 111
 112         // ...otherwise find the dock widget the widget with focus is contained in
 113         QObject *w = QApplication::focusWidget();
 114         QDockWidget *dock = nullptr;
 115
 116         while (w) {
 117                 dock = qobject_cast<QDockWidget*>(w);
 118                 if (dock)
 119                         break;
 120                 w = w->parent();
 121         }
 122
 123         // Get the view contained in the dock widget
 124         for (auto& entry : view_docks_)
 125                 if (entry.first == dock)
 126                         return entry.second;
 127
 128         return nullptr;
 129 }
 130
 131 shared_ptr<views::ViewBase> MainWindow::add_view(views::ViewType type,
 132         Session &session)
 133 {
 134         GlobalSettings settings;
 135         shared_ptr<views::ViewBase> v;
 136
 137         QMainWindow *main_window = nullptr;
 138         for (auto& entry : session_windows_)
 139                 if (entry.first.get() == &session)
 140                         main_window = entry.second;
 141
 142         assert(main_window);
 143
 144         shared_ptr<MainBar> main_bar = session.main_bar();
 145
 146         // Only use the view type in the name if it's not the main view
 147         QString title;
 148         if (main_bar)
 149                 title = QString("%1 (%2)").arg(session.name(), views::ViewTypeNames[type]);
 150         else
 151                 title = session.name();
 152
 153         QDockWidget* dock = new QDockWidget(title, main_window);
 154         dock->setObjectName(title);
 155         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 156
 157         // Insert a QMainWindow into the dock widget to allow for a tool bar
 158         QMainWindow *dock_main = new QMainWindow(dock);
 159         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 160
 161         if (type == views::ViewTypeTrace)
 162                 // This view will be the main view if there's no main bar yet
 163                 v = make_shared<views::trace::View>(session, (main_bar ? false : true), dock_main);
 164 #ifdef ENABLE_DECODE
 165         if (type == views::ViewTypeDecoderOutput)
 166                 v = make_shared<views::decoder_output::View>(session, false, dock_main);
 167 #endif
 168
 169         if (!v)
 170                 return nullptr;
 171
 172         view_docks_[dock] = v;
 173         session.register_view(v);
 174
 175         dock_main->setCentralWidget(v.get());
 176         dock->setWidget(dock_main);
 177
 178         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 179         dock->setFeatures(QDockWidget::DockWidgetMovable |
 180                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 181
 182         QAbstractButton *close_btn =
 183                 dock->findChildren<QAbstractButton*>("qt_dockwidget_closebutton")  // clazy:exclude=detaching-temporary
 184                         .front();
 185
 186         connect(close_btn, SIGNAL(clicked(bool)),
 187                 this, SLOT(on_view_close_clicked()));
 188
 189         connect(&session, SIGNAL(trigger_event(int, util::Timestamp)),
 190                 qobject_cast<views::ViewBase*>(v.get()),
 191                 SLOT(trigger_event(int, util::Timestamp)));
 192
 193         if (type == views::ViewTypeTrace) {
 194                 views::trace::View *tv =
 195                         qobject_cast<views::trace::View*>(v.get());
 196
 197                 if (!main_bar) {
 198                         /* Initial view, create the main bar */
 199                         main_bar = make_shared<MainBar>(session, this, tv);
 200                         dock_main->addToolBar(main_bar.get());
 201                         session.set_main_bar(main_bar);
 202
 203                         connect(main_bar.get(), SIGNAL(new_view(Session*, int)),
 204                                 this, SLOT(on_new_view(Session*, int)));
 205                         connect(main_bar.get(), SIGNAL(show_decoder_selector(Session*)),
 206                                 this, SLOT(on_show_decoder_selector(Session*)));
 207
 208                         main_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 209
 210                         /* For the main view we need to prevent the dock widget from
 211                          * closing itself when its close button is clicked. This is
 212                          * so we can confirm with the user first. Regular views don't
 213                          * need this */
 214                         close_btn->disconnect(SIGNAL(clicked()), dock, SLOT(close()));
 215                 } else {
 216                         /* Additional view, create a standard bar */
 217                         pv::views::trace::StandardBar *standard_bar =
 218                                 new pv::views::trace::StandardBar(session, this, tv);
 219                         dock_main->addToolBar(standard_bar);
 220
 221                         standard_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 222                 }
 223         }
 224
 225         return v;
 226 }
 227
 228 void MainWindow::remove_view(shared_ptr<views::ViewBase> view)
 229 {
 230         for (shared_ptr<Session> session : sessions_) {
 231                 if (!session->has_view(view))
 232                         continue;
 233
 234                 // Find the dock the view is contained in and remove it
 235                 for (auto& entry : view_docks_)
 236                         if (entry.second == view) {
 237                                 // Remove the view from the session
 238                                 session->deregister_view(view);
 239
 240                                 // Remove the view from its parent; otherwise, Qt will
 241                                 // call deleteLater() on it, which causes a double free
 242                                 // since the shared_ptr in view_docks_ doesn't know
 243                                 // that Qt keeps a pointer to the view around
 244                                 view->setParent(nullptr);
 245
 246                                 // Delete the view's dock widget and all widgets inside it
 247                                 entry.first->deleteLater();
 248
 249                                 // Remove the dock widget from the list and stop iterating
 250                                 view_docks_.erase(entry.first);
 251                                 break;
 252                         }
 253         }
 254 }
 255
 256 shared_ptr<subwindows::SubWindowBase> MainWindow::add_subwindow(
 257         subwindows::SubWindowType type, Session &session)
 258 {
 259         GlobalSettings settings;
 260         shared_ptr<subwindows::SubWindowBase> v;
 261
 262         QMainWindow *main_window = nullptr;
 263         for (auto& entry : session_windows_)
 264                 if (entry.first.get() == &session)
 265                         main_window = entry.second;
 266
 267         assert(main_window);
 268
 269         QString title = "";
 270
 271         switch (type) {
 272 #ifdef ENABLE_DECODE
 273                 case subwindows::SubWindowTypeDecoderSelector:
 274                         title = tr("Decoder Selector");
 275                         break;
 276 #endif
 277                 default:
 278                         break;
 279         }
 280
 281         QDockWidget* dock = new QDockWidget(title, main_window);
 282         dock->setObjectName(title);
 283         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 284
 285         // Insert a QMainWindow into the dock widget to allow for a tool bar
 286         QMainWindow *dock_main = new QMainWindow(dock);
 287         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 288
 289 #ifdef ENABLE_DECODE
 290         if (type == subwindows::SubWindowTypeDecoderSelector)
 291                 v = make_shared<subwindows::decoder_selector::SubWindow>(session, dock_main);
 292 #endif
 293
 294         if (!v)
 295                 return nullptr;
 296
 297         sub_windows_[dock] = v;
 298         dock_main->setCentralWidget(v.get());
 299         dock->setWidget(dock_main);
 300
 301         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 302         dock->setFeatures(QDockWidget::DockWidgetMovable |
 303                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 304
 305         QAbstractButton *close_btn =
 306                 dock->findChildren<QAbstractButton*>  // clazy:exclude=detaching-temporary
 307                         ("qt_dockwidget_closebutton").front();
 308
 309         // Allow all subwindows to be closed via ESC.
 310         close_btn->setShortcut(QKeySequence(Qt::Key_Escape));
 311
 312         connect(close_btn, SIGNAL(clicked(bool)),
 313                 this, SLOT(on_sub_window_close_clicked()));
 314
 315         if (v->has_toolbar())
 316                 dock_main->addToolBar(v->create_toolbar(dock_main));
 317
 318         if (v->minimum_width() > 0)
 319                 dock->setMinimumSize(v->minimum_width(), 0);
 320
 321         return v;
 322 }
 323
 324 shared_ptr<Session> MainWindow::add_session()
 325 {
 326         static int last_session_id = 1;
 327         QString name = tr("Session %1").arg(last_session_id++);
 328
 329         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
 330
 331         connect(session.get(), SIGNAL(add_view(views::ViewType, Session*)),
 332                 this, SLOT(on_add_view(views::ViewType, Session*)));
 333         connect(session.get(), SIGNAL(name_changed()),
 334                 this, SLOT(on_session_name_changed()));
 335         connect(session.get(), SIGNAL(device_changed()),
 336                 this, SLOT(on_session_device_changed()));
 337         connect(session.get(), SIGNAL(capture_state_changed(int)),
 338                 this, SLOT(on_session_capture_state_changed(int)));
 339
 340         sessions_.push_back(session);
 341
 342         QMainWindow *window = new QMainWindow();
 343         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 344         session_windows_[session] = window;
 345
 346         int index = session_selector_.addTab(window, name);
 347         session_selector_.setCurrentIndex(index);
 348         last_focused_session_ = session;
 349
 350         window->setDockNestingEnabled(true);
 351
 352         shared_ptr<views::ViewBase> main_view = add_view(views::ViewTypeTrace, *session);
 353
 354         return session;
 355 }
 356
 357 void MainWindow::remove_session(shared_ptr<Session> session)
 358 {
 359         // Determine the height of the button before it collapses
 360         int h = new_session_button_->height();
 361
 362         // Stop capture while the session still exists so that the UI can be
 363         // updated in case we're currently running. If so, this will schedule a
 364         // call to our on_capture_state_changed() slot for the next run of the
 365         // event loop. We need to have this executed immediately or else it will
 366         // be dismissed since the session object will be deleted by the time we
 367         // leave this method and the event loop gets a chance to run again.
 368         session->stop_capture();
 369         QApplication::processEvents();
 370
 371         for (const shared_ptr<views::ViewBase>& view : session->views())
 372                 remove_view(view);
 373
 374         QMainWindow *window = session_windows_.at(session);
 375         session_selector_.removeTab(session_selector_.indexOf(window));
 376
 377         session_windows_.erase(session);
 378
 379         if (last_focused_session_ == session)
 380                 last_focused_session_.reset();
 381
 382         // Remove the session from our list of sessions (which also destroys it)
 383         sessions_.remove_if([&](shared_ptr<Session> s) {
 384                 return s == session; });
 385
 386         if (sessions_.empty()) {
 387                 // When there are no more tabs, the height of the QTabWidget
 388                 // drops to zero. We must prevent this to keep the static
 389                 // widgets visible
 390                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())  // clazy:exclude=range-loop
 391                         w->setMinimumHeight(h);
 392
 393                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
 394                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
 395                 session_selector_.setMinimumHeight(h + 2 * margin);
 396
 397                 // Update the window title if there is no view left to
 398                 // generate focus change events
 399                 setWindowTitle(WindowTitle);
 400         }
 401 }
 402
 403 void MainWindow::add_session_with_file(string open_file_name,
 404         string open_file_format, string open_setup_file_name)
 405 {
 406         shared_ptr<Session> session = add_session();
 407         session->load_init_file(open_file_name, open_file_format, open_setup_file_name);
 408 }
 409
 410 void MainWindow::add_default_session()
 411 {
 412         // Only add the default session if there would be no session otherwise
 413         if (sessions_.size() > 0)
 414                 return;
 415
 416         shared_ptr<Session> session = add_session();
 417
 418         // Check the list of available devices. Prefer the one that was
 419         // found with user supplied scan specs (if applicable). Then try
 420         // one of the auto detected devices that are not the demo device.
 421         // Pick demo in the absence of "genuine" hardware devices.
 422         shared_ptr<devices::HardwareDevice> user_device, other_device, demo_device;
 423         for (const shared_ptr<devices::HardwareDevice>& dev : device_manager_.devices()) {
 424                 if (dev == device_manager_.user_spec_device()) {
 425                         user_device = dev;
 426                 } else if (dev->hardware_device()->driver()->name() == "demo") {
 427                         demo_device = dev;
 428                 } else {
 429                         other_device = dev;
 430                 }
 431         }
 432         if (user_device)
 433                 session->select_device(user_device);
 434         else if (other_device)
 435                 session->select_device(other_device);
 436         else
 437                 session->select_device(demo_device);
 438 }
 439
 440 void MainWindow::save_sessions()
 441 {
 442         QSettings settings;
 443         int id = 0;
 444
 445         for (shared_ptr<Session>& session : sessions_) {
 446                 // Ignore sessions using the demo device or no device at all
 447                 if (session->device()) {
 448                         shared_ptr<devices::HardwareDevice> device =
 449                                 dynamic_pointer_cast< devices::HardwareDevice >
 450                                 (session->device());
 451
 452                         if (device &&
 453                                 device->hardware_device()->driver()->name() == "demo")
 454                                 continue;
 455
 456                         settings.beginGroup("Session" + QString::number(id++));
 457                         settings.remove("");  // Remove all keys in this group
 458                         session->save_settings(settings);
 459                         settings.endGroup();
 460                 }
 461         }
 462
 463         settings.setValue("sessions", id);
 464 }
 465
 466 void MainWindow::restore_sessions()
 467 {
 468         QSettings settings;
 469         int i, session_count;
 470
 471         session_count = settings.value("sessions", 0).toInt();
 472
 473         for (i = 0; i < session_count; i++) {
 474                 settings.beginGroup("Session" + QString::number(i));
 475                 shared_ptr<Session> session = add_session();
 476                 session->restore_settings(settings);
 477                 settings.endGroup();
 478         }
 479 }
 480
 481 void MainWindow::setup_ui()
 482 {
 483         setObjectName(QString::fromUtf8("MainWindow"));
 484
 485         setCentralWidget(&session_selector_);
 486
 487         // Set the window icon
 488         QIcon icon;
 489         icon.addFile(QString(":/icons/pulseview.png"));
 490         setWindowIcon(icon);
 491
 492         // Set up keyboard shortcuts that affect all views at once
 493         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
 494         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
 495
 496         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
 497         view_show_sampling_points_shortcut_->setAutoRepeat(false);
 498
 499         view_show_analog_minor_grid_shortcut_ = new QShortcut(QKeySequence(Qt::Key_G), this, SLOT(on_view_show_analog_minor_grid_shortcut()));
 500         view_show_analog_minor_grid_shortcut_->setAutoRepeat(false);
 501
 502         view_colored_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_colored_bg_shortcut()));
 503         view_colored_bg_shortcut_->setAutoRepeat(false);
 504
 505         // Set up the tab area
 506         new_session_button_ = new QToolButton();
 507         new_session_button_->setIcon(QIcon::fromTheme("document-new",
 508                 QIcon(":/icons/document-new.png")));
 509         new_session_button_->setToolTip(tr("Create New Session"));
 510         new_session_button_->setAutoRaise(true);
 511
 512         run_stop_button_ = new QToolButton();
 513         run_stop_button_->setAutoRaise(true);
 514         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 515         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
 516
 517         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
 518         run_stop_shortcut_->setAutoRepeat(false);
 519
 520         settings_button_ = new QToolButton();
 521         settings_button_->setIcon(QIcon::fromTheme("preferences-system",
 522                 QIcon(":/icons/preferences-system.png")));
 523         settings_button_->setToolTip(tr("Settings"));
 524         settings_button_->setAutoRaise(true);
 525
 526         QFrame *separator1 = new QFrame();
 527         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
 528         QFrame *separator2 = new QFrame();
 529         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
 530
 531         QHBoxLayout* layout = new QHBoxLayout();
 532         layout->setContentsMargins(2, 2, 2, 2);
 533         layout->addWidget(new_session_button_);
 534         layout->addWidget(separator1);
 535         layout->addWidget(run_stop_button_);
 536         layout->addWidget(separator2);
 537         layout->addWidget(settings_button_);
 538
 539         static_tab_widget_ = new QWidget();
 540         static_tab_widget_->setLayout(layout);
 541
 542         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
 543         session_selector_.setTabsClosable(true);
 544
 545         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
 546         close_application_shortcut_->setAutoRepeat(false);
 547
 548         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
 549
 550         connect(new_session_button_, SIGNAL(clicked(bool)),
 551                 this, SLOT(on_new_session_clicked()));
 552         connect(run_stop_button_, SIGNAL(clicked(bool)),
 553                 this, SLOT(on_run_stop_clicked()));
 554         connect(settings_button_, SIGNAL(clicked(bool)),
 555                 this, SLOT(on_settings_clicked()));
 556
 557         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
 558                 this, SLOT(on_tab_close_requested(int)));
 559         connect(&session_selector_, SIGNAL(currentChanged(int)),
 560                 this, SLOT(on_tab_changed(int)));
 561
 562
 563         connect(static_cast<QApplication *>(QCoreApplication::instance()),
 564                 SIGNAL(focusChanged(QWidget*, QWidget*)),
 565                 this, SLOT(on_focus_changed()));
 566 }
 567
 568 void MainWindow::update_acq_button(Session *session)
 569 {
 570         int state = session->get_capture_state();
 571
 572         const QString run_caption =
 573                 session->using_file_device() ? tr("Reload") : tr("Run");
 574
 575         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
 576         run_stop_button_->setIcon(*icons[state]);
 577         run_stop_button_->setText((state == pv::Session::Stopped) ?
 578                 run_caption : tr("Stop"));
 579 }
 580
 581 void MainWindow::save_ui_settings()
 582 {
 583         QSettings settings;
 584
 585         settings.beginGroup("MainWindow");
 586         settings.setValue("state", saveState());
 587         settings.setValue("geometry", saveGeometry());
 588         settings.endGroup();
 589 }
 590
 591 void MainWindow::restore_ui_settings()
 592 {
 593         QSettings settings;
 594
 595         settings.beginGroup("MainWindow");
 596
 597         if (settings.contains("geometry")) {
 598                 restoreGeometry(settings.value("geometry").toByteArray());
 599                 restoreState(settings.value("state").toByteArray());
 600         } else
 601                 resize(1000, 720);
 602
 603         settings.endGroup();
 604 }
 605
 606 shared_ptr<Session> MainWindow::get_tab_session(int index) const
 607 {
 608         // Find the session that belongs to the tab's main window
 609         for (auto& entry : session_windows_)
 610                 if (entry.second == session_selector_.widget(index))
 611                         return entry.first;
 612
 613         return nullptr;
 614 }
 615
 616 void MainWindow::closeEvent(QCloseEvent *event)
 617 {
 618         bool data_saved = true;
 619
 620         for (auto& entry : session_windows_)
 621                 if (!entry.first->data_saved())
 622                         data_saved = false;
 623
 624         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
 625                 tr("There is unsaved data. Close anyway?"),
 626                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
 627                 event->ignore();
 628         } else {
 629                 save_ui_settings();
 630                 save_sessions();
 631                 event->accept();
 632         }
 633 }
 634
 635 QMenu* MainWindow::createPopupMenu()
 636 {
 637         return nullptr;
 638 }
 639
 640 bool MainWindow::restoreState(const QByteArray &state, int version)
 641 {
 642         (void)state;
 643         (void)version;
 644
 645         // Do nothing. We don't want Qt to handle this, or else it
 646         // will try to restore all the dock widgets and create havoc.
 647
 648         return false;
 649 }
 650
 651 void MainWindow::on_add_view(views::ViewType type, Session *session)
 652 {
 653         // We get a pointer and need a reference
 654         for (shared_ptr<Session>& s : sessions_)
 655                 if (s.get() == session)
 656                         add_view(type, *s);
 657 }
 658
 659 void MainWindow::on_focus_changed()
 660 {
 661         shared_ptr<views::ViewBase> view = get_active_view();
 662
 663         if (view) {
 664                 for (shared_ptr<Session> session : sessions_) {
 665                         if (session->has_view(view)) {
 666                                 if (session != last_focused_session_) {
 667                                         // Activate correct tab if necessary
 668                                         shared_ptr<Session> tab_session = get_tab_session(
 669                                                 session_selector_.currentIndex());
 670                                         if (tab_session != session)
 671                                                 session_selector_.setCurrentWidget(
 672                                                         session_windows_.at(session));
 673
 674                                         on_focused_session_changed(session);
 675                                 }
 676
 677                                 break;
 678                         }
 679                 }
 680         }
 681
 682         if (sessions_.empty())
 683                 setWindowTitle(WindowTitle);
 684 }
 685
 686 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
 687 {
 688         last_focused_session_ = session;
 689
 690         setWindowTitle(session->name() + " - " + WindowTitle);
 691
 692         // Update the state of the run/stop button, too
 693         update_acq_button(session.get());
 694 }
 695
 696 void MainWindow::on_new_session_clicked()
 697 {
 698         add_session();
 699 }
 700
 701 void MainWindow::on_run_stop_clicked()
 702 {
 703         shared_ptr<Session> session = last_focused_session_;
 704
 705         if (!session)
 706                 return;
 707
 708         switch (session->get_capture_state()) {
 709         case Session::Stopped:
 710                 session->start_capture([&](QString message) {
 711                         show_session_error("Capture failed", message); });
 712                 break;
 713         case Session::AwaitingTrigger:
 714         case Session::Running:
 715                 session->stop_capture();
 716                 break;
 717         }
 718 }
 719
 720 void MainWindow::on_settings_clicked()
 721 {
 722         dialogs::Settings dlg(device_manager_);
 723         dlg.exec();
 724 }
 725
 726 void MainWindow::on_session_name_changed()
 727 {
 728         // Update the corresponding dock widget's name(s)
 729         Session *session = qobject_cast<Session*>(QObject::sender());
 730         assert(session);
 731
 732         for (const shared_ptr<views::ViewBase>& view : session->views()) {
 733                 // Get the dock that contains the view
 734                 for (auto& entry : view_docks_)
 735                         if (entry.second == view) {
 736                                 entry.first->setObjectName(session->name());
 737                                 entry.first->setWindowTitle(session->name());
 738                         }
 739         }
 740
 741         // Update the tab widget by finding the main window and the tab from that
 742         for (auto& entry : session_windows_)
 743                 if (entry.first.get() == session) {
 744                         QMainWindow *window = entry.second;
 745                         const int index = session_selector_.indexOf(window);
 746                         session_selector_.setTabText(index, session->name());
 747                 }
 748
 749         // Refresh window title if the affected session has focus
 750         if (session == last_focused_session_.get())
 751                 setWindowTitle(session->name() + " - " + WindowTitle);
 752 }
 753
 754 void MainWindow::on_session_device_changed()
 755 {
 756         Session *session = qobject_cast<Session*>(QObject::sender());
 757         assert(session);
 758
 759         // Ignore if caller is not the currently focused session
 760         // unless there is only one session
 761         if ((sessions_.size() > 1) && (session != last_focused_session_.get()))
 762                 return;
 763
 764         update_acq_button(session);
 765 }
 766
 767 void MainWindow::on_session_capture_state_changed(int state)
 768 {
 769         (void)state;
 770
 771         Session *session = qobject_cast<Session*>(QObject::sender());
 772         assert(session);
 773
 774         // Ignore if caller is not the currently focused session
 775         // unless there is only one session
 776         if ((sessions_.size() > 1) && (session != last_focused_session_.get()))
 777                 return;
 778
 779         update_acq_button(session);
 780 }
 781
 782 void MainWindow::on_new_view(Session *session, int view_type)
 783 {
 784         // We get a pointer and need a reference
 785         for (shared_ptr<Session>& s : sessions_)
 786                 if (s.get() == session)
 787                         add_view((views::ViewType)view_type, *s);
 788 }
 789
 790 void MainWindow::on_view_close_clicked()
 791 {
 792         // Find the dock widget that contains the close button that was clicked
 793         QObject *w = QObject::sender();
 794         QDockWidget *dock = nullptr;
 795
 796         while (w) {
 797             dock = qobject_cast<QDockWidget*>(w);
 798             if (dock)
 799                 break;
 800             w = w->parent();
 801         }
 802
 803         // Get the view contained in the dock widget
 804         shared_ptr<views::ViewBase> view;
 805
 806         for (auto& entry : view_docks_)
 807                 if (entry.first == dock)
 808                         view = entry.second;
 809
 810         // Deregister the view
 811         for (shared_ptr<Session> session : sessions_) {
 812                 if (!session->has_view(view))
 813                         continue;
 814
 815                 // Also destroy the entire session if its main view is closing...
 816                 if (view == session->main_view()) {
 817                         // ...but only if data is saved or the user confirms closing
 818                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 819                                 tr("This session contains unsaved data. Close it anyway?"),
 820                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 821                                 remove_session(session);
 822                         break;
 823                 } else
 824                         // All other views can be closed at any time as no data will be lost
 825                         remove_view(view);
 826         }
 827 }
 828
 829 void MainWindow::on_tab_changed(int index)
 830 {
 831         shared_ptr<Session> session = get_tab_session(index);
 832
 833         if (session)
 834                 on_focused_session_changed(session);
 835 }
 836
 837 void MainWindow::on_tab_close_requested(int index)
 838 {
 839         shared_ptr<Session> session = get_tab_session(index);
 840
 841         if (!session)
 842                 return;
 843
 844         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 845                 tr("This session contains unsaved data. Close it anyway?"),
 846                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 847                 remove_session(session);
 848 }
 849
 850 void MainWindow::on_show_decoder_selector(Session *session)
 851 {
 852 #ifdef ENABLE_DECODE
 853         // Close dock widget if it's already showing and return
 854         for (auto& entry : sub_windows_) {
 855                 QDockWidget* dock = entry.first;
 856                 shared_ptr<subwindows::SubWindowBase> decoder_selector =
 857                         dynamic_pointer_cast<subwindows::decoder_selector::SubWindow>(entry.second);
 858
 859                 if (decoder_selector && (&decoder_selector->session() == session)) {
 860                         sub_windows_.erase(dock);
 861                         dock->close();
 862                         return;
 863                 }
 864         }
 865
 866         // We get a pointer and need a reference
 867         for (shared_ptr<Session>& s : sessions_)
 868                 if (s.get() == session)
 869                         add_subwindow(subwindows::SubWindowTypeDecoderSelector, *s);
 870 #endif
 871 }
 872
 873 void MainWindow::on_sub_window_close_clicked()
 874 {
 875         // Find the dock widget that contains the close button that was clicked
 876         QObject *w = QObject::sender();
 877         QDockWidget *dock = nullptr;
 878
 879         while (w) {
 880             dock = qobject_cast<QDockWidget*>(w);
 881             if (dock)
 882                 break;
 883             w = w->parent();
 884         }
 885
 886         sub_windows_.erase(dock);
 887         dock->close();
 888 }
 889
 890 void MainWindow::on_view_colored_bg_shortcut()
 891 {
 892         GlobalSettings settings;
 893
 894         bool state = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
 895         settings.setValue(GlobalSettings::Key_View_ColoredBG, !state);
 896 }
 897
 898 void MainWindow::on_view_sticky_scrolling_shortcut()
 899 {
 900         GlobalSettings settings;
 901
 902         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
 903         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
 904 }
 905
 906 void MainWindow::on_view_show_sampling_points_shortcut()
 907 {
 908         GlobalSettings settings;
 909
 910         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 911         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
 912 }
 913
 914 void MainWindow::on_view_show_analog_minor_grid_shortcut()
 915 {
 916         GlobalSettings settings;
 917
 918         bool state = settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 919         settings.setValue(GlobalSettings::Key_View_ShowAnalogMinorGrid, !state);
 920 }
 921
 922 void MainWindow::on_close_current_tab()
 923 {
 924         int tab = session_selector_.currentIndex();
 925
 926         on_tab_close_requested(tab);
 927 }
 928
 929 } // namespace pv